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C87900 Brass vs. C95700 Bronze

Both C87900 brass and C95700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 67% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C87900 brass and the bottom bar is C95700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
130
Elongation at Break, % 25
23
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 41
47
Tensile Strength: Ultimate (UTS), MPa 480
680
Tensile Strength: Yield (Proof), MPa 240
310

Thermal Properties

Latent Heat of Fusion, J/g 190
230
Maximum Temperature: Mechanical, °C 130
220
Melting Completion (Liquidus), °C 930
990
Melting Onset (Solidus), °C 900
950
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 17
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
26
Density, g/cm3 8.1
8.2
Embodied Carbon, kg CO2/kg material 2.7
3.3
Embodied Energy, MJ/kg 46
54
Embodied Water, L/kg 320
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
130
Resilience: Unit (Modulus of Resilience), kJ/m3 270
390
Stiffness to Weight: Axial, points 7.3
8.5
Stiffness to Weight: Bending, points 20
20
Strength to Weight: Axial, points 17
23
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 37
3.3
Thermal Shock Resistance, points 16
21

Alloy Composition


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Aluminum (Al), % 0 to 0.15
7.0 to 8.5
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Copper (Cu), % 63 to 69.2
71 to 78.5
Iron (Fe), % 0 to 0.4
2.0 to 4.0
Lead (Pb), % 0 to 0.25
0 to 0.030
Manganese (Mn), % 0 to 0.15
11 to 14
Nickel (Ni), % 0 to 0.5
1.5 to 3.0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0.8 to 1.2
0 to 0.1
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 30 to 36
0
Residuals, % 0
0 to 0.5